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37 "De Lock JolTdis fecunda DiVmatio Geometric in . 
quinque Libros injuria Tem^orum amjfos^ Jrift^i 
Smioris Geometry. Jutore Viyicentio Viyiani^ Mag-^ 
7U Vucis Strurid Mathematico ^rimario^ ((^ ^galts 
Societatij Londini iodali. Opus Conicum> in Lucem 
proiatum^ dmi. 1701« folio. 
T]A<Q P^mhiOiVincenth Viviam^ who was 80 years oM 
when this Book was publilhed, and the laft alive 
of the famous Galileos Scholars, was ever fince the year 
1642 employed by the great Dukes of Tufcany in direft- 
ing the Fortifications of their Dominions, overfeeipg 
their Buildings, , the banks of the Rivers, and othet: 
publick Works y fo that ha complained that he. had 
not leifure to profecute his inventions in Geometry, 
that he made in his younger days, of which this Book 
is one. 
As for his other Works they are thefe. In the year 
1659. he publiflied a Book in folio, intituled, De Maxi^ 
mis Minims Divinatio Geometrica- in ^intHm ApoU 
lonii Librum 5 and he willies, that as Apollohius's own 
fifth Book was found Ihortly after, Co Ari(l£i^/s Books 
may be found after the edition of this. That Divinatio 
is the reafon why this Book, we are now to give an ac- 
count of, is called Divimtio Secunda. In the year 1692 
he publifhed a Treatife in Italian^ intituled, Formazione 
e Mifnradi Tutti i ddi^ in confequence of an JEnigm4. 
ArchiteSonicum he under a borrowed name, pro- 
pofed in the- beginning of that year, in vi^hich divers 
learned men . concerned tbemfelves. Thefe* are all he 
^has 
